1. Unit 2: Classification of Matter

2. Opener Copy the question and answers Which representation is a structural formula?  A. O  B. OH  C. H 2 O 2  D. H-O-O-H

3. Review Unit Test  Retake will be Thursday after school  You MUST sign up for a retake Binder check  Grades are in the gradebook Opener sheet  Grades are in the gradebook

4. Standards List New set of standards and “I can” statements  This becomes the first page in your new binder list  Make sure you have a binder  This is easy points

5. Unit 2 Pre-Test Do your best Give as much information as possible Graded based on your effort  Remember we will be using this throughout the unit 20 minutes

6. Notes Notes today will be on the board  Make sure to copy those down  Part of your binder Practice Problems at your seat

7. Opener Copy the question and the answers What is the chemical formula of calcium cyanide?  A. CaCN  B. CaCN 2  C. Ca(CN) 2  D. Ca(CN) 3

8. Review Unit Pre-Test New unit

9. Notes Matter – anything that takes up space and has mass Mass – amount of matter in a substance Pure substance – Any substance with definite composition and definite properties Mixture – 2 or more substances physically combined Element - group of only 1 type of atoms Compound – 2 or more types of atoms chemically bonded together Homogeneous mixture – mixture with uniform composition throughout Heterogeneous mixture – mixture with uneven composition throughout

10. Practice Now let’s practice some classification Objects are located throughout the room  Fill out your chart for each of the objects  First we will focus on separating between pure substance and mixture

11. 2 kinds of mixtures Mixture – not the same as a compound. Usually composed of several substances

12. Homework On your same classification sheet  Try to classify each piece of matter as a …  Element  Compound  Heterogeneous mixture  Homogeneous mixture

13. Opener Copy the question and answers What is the correct chemical formula for iron (III) sulfide?  A. Fe 2 S 3  B. Fe 3 S 2  C. Fe 2 (SO 4 ) 3  D. Fe 3 (SO 4 ) 2

14. Review Classes of Matter Activity  Homework Turn In

15. Card Sort On a separate sheet of paper In groups of two…  Place each of the cards into a column  In column A, you need item #1 and #2  In column B, you need item #3 and #4  Write down the items in each column and explain why you separated the items the way you did

16. Card Sort Challenge Now try to place the items into four columns  In column A, place item #2  In column B, place item #6  In column C, place item #7  In column D, place item #17  Again be write down your columns and explain why you classified them that way

17. Classwork/Homework Complete the packet  What you do not finish today will be homework